DE3887126D1 - METHODS TO ACCESS AN OPTICAL RECORDING TRACK. - Google Patents

METHODS TO ACCESS AN OPTICAL RECORDING TRACK.

Info

Publication number
DE3887126D1
DE3887126D1 DE88907395T DE3887126T DE3887126D1 DE 3887126 D1 DE3887126 D1 DE 3887126D1 DE 88907395 T DE88907395 T DE 88907395T DE 3887126 T DE3887126 T DE 3887126T DE 3887126 D1 DE3887126 D1 DE 3887126D1
Authority
DE
Germany
Prior art keywords
access
methods
optical recording
recording track
track
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE88907395T
Other languages
German (de)
Other versions
DE3887126T2 (en
Inventor
Shigenori Yanagi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27329828&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3887126(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of DE3887126D1 publication Critical patent/DE3887126D1/en
Application granted granted Critical
Publication of DE3887126T2 publication Critical patent/DE3887126T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08529—Methods and circuits to control the velocity of the head as it traverses the tracks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08517—Methods for track change, selection or preliminary positioning by moving the head with tracking pull-in only
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08541—Methods for track change, selection or preliminary positioning by moving the head involving track counting to determine position
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/095—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0953—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks
DE88907395T 1987-08-29 1988-08-25 METHODS TO ACCESS AN OPTICAL RECORDING TRACK. Expired - Fee Related DE3887126T2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP21599687 1987-08-29
JP21875487 1987-09-01
JP26412587 1987-10-20
PCT/JP1988/000844 WO1989002150A1 (en) 1987-08-29 1988-08-25 Methods of accessing an optical recording track

Publications (2)

Publication Number Publication Date
DE3887126D1 true DE3887126D1 (en) 1994-02-24
DE3887126T2 DE3887126T2 (en) 1994-04-28

Family

ID=27329828

Family Applications (1)

Application Number Title Priority Date Filing Date
DE88907395T Expired - Fee Related DE3887126T2 (en) 1987-08-29 1988-08-25 METHODS TO ACCESS AN OPTICAL RECORDING TRACK.

Country Status (5)

Country Link
US (2) US5121370A (en)
EP (1) EP0332708B1 (en)
KR (1) KR920009196B1 (en)
DE (1) DE3887126T2 (en)
WO (1) WO1989002150A1 (en)

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US5303225A (en) * 1989-10-30 1994-04-12 Matsushita Electrical Industrial Co., Ltd. Multi-layered optical disk with track and layer identification
DE69123636T2 (en) * 1990-05-17 1997-04-17 Fujitsu Ltd Search positioning system for disc device
JP2656371B2 (en) * 1990-06-26 1997-09-24 富士通株式会社 Optical disk drive
JP2531847B2 (en) * 1990-09-27 1996-09-04 インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン Optical disk drive
JPH04254919A (en) * 1991-02-07 1992-09-10 Hitachi Ltd Tracking controller
US5309417A (en) * 1991-10-09 1994-05-03 Nippon Conlux Co., Ltd. Information recording/reproducing apparatus for optical information recording medium
US5812506A (en) * 1992-04-10 1998-09-22 Wea Manufacturing, Inc. System and methods for measuring and correcting for overshoot in a high frequency (HF) signal generated by a compact disc player during testing of a compact disc
US5675560A (en) * 1994-08-22 1997-10-07 Canon Kabushiki Kaisha Information recording/reproducing apparatus with function of seeking light beam to target position, and method therefor
US5623464A (en) * 1994-09-29 1997-04-22 Fujitsu Limited Optical disk apparatus and seek control method
US6320828B1 (en) * 1998-11-10 2001-11-20 Oak Technology, Inc. Servo system having track crossing detection for an optical disk drive system
JP2000285479A (en) * 1999-03-31 2000-10-13 Fujitsu Ltd Information storage device
US6339565B1 (en) * 1999-03-31 2002-01-15 Lsi Logic Corporation Non-linear center-error generator for DVD servo control
JP2001118366A (en) * 1999-10-20 2001-04-27 Brother Ind Ltd Device and method for detecting discontinuous position
US6636466B1 (en) * 2000-10-05 2003-10-21 Lite-On It Corporation Method for track seeking of a reading head in an optic disk drive
US6898164B2 (en) * 2001-01-25 2005-05-24 Dphi Acquisitions, Inc. Close tracking algorithm in a digital tracking servo system
US7522480B2 (en) 2001-01-25 2009-04-21 Dphi Acquisitions, Inc. Digital tracking servo system with multi-track seek with an acceleration clamp
JP3758614B2 (en) * 2002-06-28 2006-03-22 ヤマハ株式会社 Optical disc recording apparatus and image forming method for optical disc
JP3772136B2 (en) * 2002-07-30 2006-05-10 株式会社東芝 Optical disk device and access method of optical disk device
KR100950527B1 (en) * 2003-07-15 2010-03-30 삼성전자주식회사 Apparatus and method for track jump concerned position of pickup
SE528486C2 (en) * 2004-05-24 2006-11-28 Audiodev Ab Quality testing method for optical disk e.g. compact disk, involves performing leap in radial direction of disk and simultaneously analyzing disk in off-track measurement mode to determine off-track quality parameters
US10878646B2 (en) 2005-12-08 2020-12-29 Smartdrive Systems, Inc. Vehicle event recorder systems
US20070217303A1 (en) * 2006-03-14 2007-09-20 Lsi Logic Corporation Seatbelt lens control during rough seek
US8996240B2 (en) * 2006-03-16 2015-03-31 Smartdrive Systems, Inc. Vehicle event recorders with integrated web server
US8989959B2 (en) 2006-11-07 2015-03-24 Smartdrive Systems, Inc. Vehicle operator performance history recording, scoring and reporting systems
US8868288B2 (en) * 2006-11-09 2014-10-21 Smartdrive Systems, Inc. Vehicle exception event management systems
CN101488351B (en) * 2008-01-14 2011-07-27 鸿富锦精密工业（深圳）有限公司 Optical disc playing device and motor controlling method thereof
US8711664B2 (en) * 2010-06-21 2014-04-29 Mediatek Inc. Method of controlling mechanical mechanisms of optical storage apparatus for peak power/current reduction, and related optical storage apparatus and machine-readable medium
US9728228B2 (en) 2012-08-10 2017-08-08 Smartdrive Systems, Inc. Vehicle event playback apparatus and methods
US9610955B2 (en) 2013-11-11 2017-04-04 Smartdrive Systems, Inc. Vehicle fuel consumption monitor and feedback systems
US10306125B2 (en) 2014-10-09 2019-05-28 Belkin International, Inc. Video camera with privacy
US9179105B1 (en) * 2014-09-15 2015-11-03 Belkin International, Inc. Control of video camera with privacy feedback
US11790947B1 (en) * 2022-05-03 2023-10-17 Seagate Technology Llc Idle power saving for actuator device

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2349191A1 (en) * 1976-04-23 1977-11-18 Thomson Brandt OPTICAL INFORMATION DISC READER INCLUDING AN AUTOMATIC INFORMATION ACCESS DEVICE
US4375091A (en) * 1978-06-30 1983-02-22 Discovision Associates Method and apparatus for information retrieval from an optically readable storage medium
NL8003305A (en) * 1980-06-06 1982-01-04 Philips Nv Apparatus for locating a desired information track.
JPS5764337A (en) * 1980-10-01 1982-04-19 Matsushita Electric Ind Co Ltd Track retrieval device
US4484319A (en) * 1980-09-19 1984-11-20 Matsushita Electric Industrial Co., Ltd. Apparatus for locating a track on disc-like optical information carriers
JPS5755542A (en) * 1980-09-19 1982-04-02 Matsushita Electric Ind Co Ltd Track retrieving device of optical information recorder and reproducer
JPS58122676A (en) * 1982-01-16 1983-07-21 Sony Corp Track jump device for disc
US4774699A (en) * 1981-12-21 1988-09-27 Discovision Associates Method and apparatus for positioning a read head to a selected track on a record disc
JPS58166567A (en) * 1982-03-26 1983-10-01 Matsushita Electric Ind Co Ltd Retrieving device of information track
EP0098076A1 (en) * 1982-06-14 1984-01-11 Nec Corporation Beam access apparatus for optical disc system
NL8303046A (en) * 1983-09-01 1985-04-01 Philips Nv DEVICE FOR READING A DISC REGISTRATION CARRIER.
JPS6139239A (en) * 1984-07-28 1986-02-25 Sony Corp Optical disc player
US4740939A (en) * 1985-05-22 1988-04-26 Hitachi Ltd. Apparatus for reproducing information recorded on a disk
DE3520189A1 (en) * 1985-06-05 1986-12-11 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen METHOD FOR JUMPING IN TRACK SEARCH PROCESSES AND CIRCUIT ARRANGEMENT FOR IMPLEMENTING THE METHOD
JPS62125543A (en) * 1985-11-27 1987-06-06 Sony Corp Track jump controller for optical reproducer
DE3543568A1 (en) * 1985-12-10 1987-06-11 Thomson Brandt Gmbh METHOD FOR SEARCHING FOR TRACKS IN A ROTATING DISK-SHAPED INFORMATION CARRIER AND CIRCUIT ARRANGEMENT FOR IMPLEMENTING THE METHOD
JPS62170031A (en) * 1986-01-21 1987-07-27 Seiko Epson Corp Access controller for optical disk
US4779251A (en) * 1987-06-12 1988-10-18 Optimem Optical disk memory system with closed loop micro-jump between adjacent tracks

Also Published As

Publication number Publication date
EP0332708B1 (en) 1994-01-12
WO1989002150A1 (en) 1989-03-09
US5121370A (en) 1992-06-09
EP0332708A1 (en) 1989-09-20
USRE36590E (en) 2000-02-29
KR920009196B1 (en) 1992-10-14
DE3887126T2 (en) 1994-04-28
KR890702189A (en) 1989-12-23

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8365 Fully valid after opposition proceedings
8339 Ceased/non-payment of the annual fee